Subject: | |
From: | |
Reply To: | |
Date: | Sat, 30 Aug 2003 14:12:02 -0400 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
----- Original Message -----
From: "Lynn Roberts N8LXK" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, August 30, 2003 1:47 PM
Subject: Re: power question from Mike
>
> ----- Original Message -----
> From: "Lynn Roberts N8LXK" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Saturday, August 30, 2003 1:38 PM
> Subject: re: power question from Mike
>
>
> > Hi Mike,
> > Antenna Gain and coax do not mean as much as height. Get a chopper to
hang
> > your antenna from a low cloud. Seriously try to get higher or closer to
> the
> > wavelngth of interest. Shortened antennas don't radiate as well as long
> > ones. Don't spend much money on improving the loss by getting
> low-losscoax,
> > HEIGHT, HEIGHT, HEIGGHT.
> > Lynn
> > [log in to unmask]
> >
> > ----- Original Message -----
> > Fro<BLINDm: "richard & Karlene" <[log in to unmask]>
> > To: [log in to unmask]>
> > Sent: Saturday, August 30, 2003 11:59 AM
> >
> >
> > > Hi Mike;
> > > In general your output power will have to go from lets say 100 to at
> least
> > > 400 to see any real difference. Going from 100 to 250 would be
> relatively
> > > meaningless. Similarly going from 500 to 900 output wouldn't do much
> > > either. If possible you can get much more improvement if you upgrade
> the
> > > gain of the antenna than increasing the power. The nasty problem is
> that
> > it
> > > is much easier for many on this list to upgrade the power than to try
> and
> > > upgrade the antenna.
> > > You may get lots of different opinions however.
> > > Richard
> > > ----- Original Message -----
> > > From: "Michael Ryan" <[log in to unmask]>
> > > To: < >
> > > Sent: Friday, August 29, 2003 10:05 AM
> > >
> > >
> > > > Hi all:
> > > >
> > > > Is there a rule of thumb that can be used?
> > > > IE: you have a perfectly resonant antenna with 100W out. What
power
> is
> > > > needed to get an improvement on the signal strength? Will 200W make
> > much
> > > > difference or to receive an actual increase in signal strength, a
> power
> > > > gain of lets say, 500W is required? Will a power output of 800/KW
give
> > > much
> > > > improvements to a 500W signal strength? Also, If you have an amp
> rated
> > at
> > > > 400W continuous or digital mode, what would the PEP SSB rating be?
> > > >
> > > > Thanks to all & 73:
> > > > Michael VO1RYN
> > > >
> > >
> >
>
|
|
|